After a short irresistible infection which as influenced 99.9% of the populace, you have all the earmarks of being the last one standing! The city has fallen, you have made it to the recreation center, however the crowds are chasing you down! Hold fast and slaughter them all!

Glance around to point down the barrel of your firearm, make an effort not to get discombobulated while you turn around to discover the zombies making a beeline for you in the murkiness. When you see one, shoot away!